Equalized roller press for pipe manufacturing



March 23 1926.

J. H. M GREGOR EQUALIZED ROLLER PRESS'FOR PIPE MANUFACTURING Filed June12 1925 JMtO'L eo Grey? cf. ii

Patented Mar. 23,

ra n-t rarest QFFECE.

JOHN HAROLD MACGREGOR, OF IPORTLAND, OREGON.

EQUALIZED ROLLER-PRESSFOE PIEE MANUFACTURING.

Application filed June 12, 1925. Serial No. 36,764.

for its object to provide a structure whereby the lock bars may becrimped into engagement with the semi-cylindrical. sections of r thepipe. v

Another important object of the invention is to provide a device of thisnature which is exceedingly simple in its construction, efficient andreliable in operation, strong, durable, easy to manipulate, not likelyto easily become out of order, and otherwise well adapted to the purposefor which .it is designed.

Another very important object of the in- 25 vention is to provide apress of this nature having a structure whereby the pressure isequalized between top and bottom bar rolls so that the lock bar will becrimped with equal pressure at its inner and outer sides.

With the above and numerous other objects in view, as Wlll appear as thetl6SOl11)-' tion proceeds, the invention resides in cer-j tain-novelfeatures of construction, and in the combination and arrangement ofparts as will be hereinafter more fully described and claimed.

In the drawing Figure 1 is a side elevation of the device, embodying thefeatures of this invention.

Figure 2 is a front elevation thereof, and

Figure 3 is an enlarged fragmentary transverse section taken through thepipe being manufactured.

Referring to the drawing in detail, it will be seen that the numerals 5designate the two sides of the press, which extend vertically in spacedrelation to each other, so as to be disposed in a parallel plane. topplaten 6 is mounted between the upper ends of the sides 5 and a bottomplaten 7 is fixed between the bottom ends of the sides A bracket 8depends from the platen 6 and supports press rolls 9. A ram 10 operatedmechanically, by a hydraulic pressure or in any other manner is slidablethrough the platen 7 and has a bracket 11 on its upper end forsupporting the press rolls 12. A 2

pair of horizontally disposed and vertically spaced bracket arms 13extend inwardly from each side 5 and have journaled in their ends, inany suitable manner pipe guide rolls 14, theaxis of which extendvertically. The sides 5 are provided with guide slots 15, extendingvertically thereof along the median vertical dimensions thereof, and

terminate a distance from the top and bot-'- tom thereof. Journal boxes16 are slidable in the guide slots and receive a shaft 17 having the topcrimping roll 18 mounted thereon. The press rolls engage the shaft 17and are disposed one on each side of the crimping rolls 18. A similarpair of journal boxes 19 are slidable in the lower portions of the slots15 and receive shaft 20, which is engageable by the press rolls 12 andhas mounted on its center portion the crimping roll 21. Threaded bars 23and 24 extend respectively from journal boxes 16 and 19,-

through the top and bottom ends of the sides respectively, and nuts 25and 26 are engaged on the bars 23 and 2 1 respectively, for restingagainst the respective ends of the slots 15, so that the approximateadjust ment may be made between the shafts 17 and 20 before the ram 10is brought into play. A pipe mandrel. 28 is mounted to move between thecrimping rolls 18 and 21 and between the guide rolls 14. Lock bar guiderolls 29 are mounted in spaced relation along the upper edge of the pipemandrel. At the end of the pipe mandrel there is journaled intermediatecrimping rolls, two in number, as indicated at 30, and these rolls 30are received in the ends of the pipemandrel, said end being bifurcatedfor this purpose.

In using the device, the semi-cylindrical pipe sections 32 are disposedon one each side of the pipe mandrel and have their edges disposed inthe grooves 33 of the look bar 34. The pipe mandrel 28 is then fedbetween the sides 5, as previously indicated, in any suitable manner,either manually or by suitable mechanical means, and thus the top andbottom lock bars 34 are engaged with by the top and bottom crimp rolls18 and 21 respectively, on their outer sides, and by the intermediatecrimping rolls 30 on their inner sides, so that when the ram 10 isbrought into play the side bars of the grooves 33 of the lock bars 3iwill be crimped into locked engagement with the edges of the pipesections 32. Any suitable means (not shown) may be used to drivecrimping rolls l8 and 21..

It is thought that the construction, operation, and advantages of theinvention will be clearly understood by those skilled in this art,without a more detailed description. it is desired, however, to pointout that the present embodiment of the invention has been disclosedmerely by way of example, and that numerous changes in the details ofconstruction, and in the combinat on and arrangement of parts may beresorted to, without departing from the spirit or scope of the inventionas hereinafter claimed, or sacrificing any of its advantages.

hat is claimed as new is:

l. A roller press for pipe manufacturing including a pair of sides, atop platen between the sides, a bottom platen between the sides, abracket depending from the top platen, press rolls journaled in thebracket, a ram slidable through the bottom platen. a bracket on theupper end of the ram, press rollers journaled in the bracket on the ram,

:1- pair of journal boxes slidably mounted in each side, means foradjusting the journal boxes toward each other, a pair of shafts disposedtransversely between the sides and mounted in the journal boxes,crimping rolls one on each shaft, said shafts being engageable with theadjacent press rolls so that said rolls are disposed one on each side ofthe respective crimping rollers, a pair of guide rolls having their axesextending rectangularly to the axes of the shafts, and means formounting the guide rolls on the sides.

2. A roller press for pipe manufacturing including a pair out sides, atop platen between the sides, a bottom platen between the sides, abracket depending from the top platen, press rolls journaled in thebracket, a ram slidable through the bottom platen, a bracket on theupper end of the ram, press rollers journaled in the bracket on the ram,a pair of journal boxes slidably mounted in each side, means foradjusting the journal boxes toward each other, a pair ot shafts disposedtransversely between the sides and mounted in the journal boxes,crimping rolls one on each shaft, said shafts being engageable with theadjacent press rolls so that said rolls are disposed one on each side ofthe respective crimping rollers, a pair of guide rolls having their axesextending rectangularly to the axes of the shafts, means for mountingthe guide rolls on the sides, a pipe mandrel. QXtGlNllIlfl rectangularlyto the axes of the shafts and the guide rolls, and a pair ofintermeuiatc crinming rolls journaled in the end of the pipe mandrel forassociation with the other crimp rolls.

3. A roller press for pipe manufacturing including a pair of sides, atop platen be tween the sides, a bottom platen between the sides, abracket depending from the top platen, press rolls journaled in thebracket, a ram slidable through the bottom platen, a bracket on theupper end of the rum, press rollers journaled in the bracket of the ram,a pair of journal boxes slidably mounted in each side, means foradjusting the journal boxes toward each other, a pair of shafts disposedtransversely between the sides and mounted in the journal boxes,crin'iping rolls one on each shat't, said shafts being engageable'withthe adjacent press rolls so that said rolls are disposed one on eachside of the respective crimping rollers, a pair 0t guide rolls havingtheir axes extending reetangularly to the axes of the shafts, means formounting the guide rolls on the sides, a pipe mandrel extendingrectangularl to the axes of the shatts and the guide rolls, a pair ofintermediate crimpii' g rolls journaled in the end of the pipe mandreltor association with the other crimp rolls, and guide rolls journaled onthe upper edge of the pipe mandrel.

In testimony whereof I aiiix my signature.

JOHN HAROLD MAOGREGOR.

